Line of Best Fit Flashcard

Front

What is a line of best fit?

Back

A line that best represents the data on a scatter plot, showing the trend of the data points.

Front

What does a positive correlation indicate?

Back

As one variable increases, the other variable also increases.

Front

What is the y-intercept in a linear equation?

Back

The point where the line crosses the y-axis, representing the value of y when x is 0.

Front

How do you determine the slope of a line?

Back

The slope is calculated as the change in y divided by the change in x (rise over run).

Front

What does it mean if there is no correlation in a scatter plot?

Back

There is no discernible relationship between the two variables; changes in one do not affect the other.

Front

What is the purpose of a trend line in a scatter plot?

Back

To summarize the relationship between the variables and make predictions.

Front

How can you use a line of best fit to make predictions?

Back

By extending the line to estimate values of one variable based on known values of the other.

Front

What is the difference between positive and negative correlation?

Back

Positive correlation means both variables increase together, while negative correlation means one variable increases as the other decreases.

Front

What does the term 'scatter plot' refer to?

Back

A graph that displays values for two variables using dots to represent the data points.

Front

What is an example of a situation with a positive correlation?

Back

As study time increases, test scores tend to increase.